Mechanics

A hit of damage that has a chance to poison is capable of inflicting poison. Only physical and chaos damage are able to inflict poison.[2]

Poison is a cumulatively stacking debuff. Each application—or 'stack'—of poison remains present on the target dealing chaos damage over time until it runs its course.[2] There is no limit to the number of poison stacks a target can have.[1] A single "hit" can apply a maximum of one poison stack, therefore having more than 100% chance to poison is redundant.[3]

Damage

The base damage per second dealt by a given application of poison equals 20% of the combined physical and chaosdamage of the base damage dealt which applied that particular instance of poison.[4]

As an ailment modifier, stats modifying spell damage and attack damage do not apply to poison, nor damage modifers that are only affected by the skill.

The following modifiers will directly affect the damage of poison:

Damage

Damage over Time

Chaos Damage

Poison Damage

Trap, mine, minion or totem damage modifiers will also affect the damage of poison if it is applied by a trap, a mine, a minion or a totem respectively.[5]

Duration

The default base duration of poison is 2 seconds. Viper StrikeViper StrikeAttack, Duration, Melee, ChaosMana Cost: 5Cast Time: 1.00 secDamage Effectiveness: (115%-142%)Hits the enemy, adding some of your physical damage as chaos damage and applying poison. Requires a claw, dagger or sword.Per 1% Quality:0.5% increased Attack SpeedDeals (115-141.6)% of Base Damage25% of Physical Damage Converted to Chaos Damage60% chance to Poison on HitBase duration is 4 seconds+(0-2) to Melee rangePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. inflicts poison with a base duration of 4 seconds.

Increasing poison duration with the Temporal ChainsTemporal ChainsSpell, AoE, Duration, CurseRadius: 22Mana Cost: (24-50)Cast Time: 0.50 secRequires Level 24Curses all targets in an area, Slowing them, and making effects on them expire more slowly.Per 1% Quality:Cursed Enemies have 0.5% less Action SpeedBase duration is (5-5.95) secondsCursed Enemies have (20-29)% less Action SpeedOther effects on Cursed enemies expire 40% slower40% reduced Effect of Curse against Players+(0-7) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. curse results in a longer-lasting poison that deals damage at the same rate.

Removal and immunity

A flask with the of Curingof CuringSuffixImmune to Poison during Flask EffectRemoves Poison on usesuffix removes poison on sip and grants immunity to it while active

Active skill gems

Related base stats

Skill gem

Herald of AgonyHerald of AgonySpell, Herald, Minion, ChaosMana Reserved: 25%Can Store 1 Use(s)Cooldown Time: 1.00 secRequires Level 16Grants a buff giving more poison damage and a chance to inflict poison. When you poison an enemy while you have this buff, you gain Virulence, and summon an Agony Crawler minion that uses projectile and area attacks. You will lose Virulence over time, at a rate which increases the more Virulence you have. The minion will die when you have no Virulence.Per 1% Quality:1% increased Minion Movement SpeedGrants 20% chance to Poison on HitGrants 10% more Poison DamageAgony Crawler deals (10-19)% increased Physical Damage per Virulence you haveAgony Crawler has (2-3)% increased Attack Speed per Virulence you haveAgony Crawler has (1-45) to (3-84) Added Physical Damage per Virulence you haveMaximum 1 Summoned Agony CrawlerGrants Virulence when you Poison an EnemyMinions cannot Taunt EnemiesPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.

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Viper StrikeViper StrikeAttack, Duration, Melee, ChaosMana Cost: 5Cast Time: 1.00 secDamage Effectiveness: (115%-142%)Hits the enemy, adding some of your physical damage as chaos damage and applying poison. Requires a claw, dagger or sword.Per 1% Quality:0.5% increased Attack SpeedDeals (115-141.6)% of Base Damage25% of Physical Damage Converted to Chaos Damage60% chance to Poison on HitBase duration is 4 seconds+(0-2) to Melee rangePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.

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1

Related quality stats

Support skill gems

Related base stats

Skill gem

Lesser Poison SupportLesser Poison SupportChaos, SupportIcon: OMana Multiplier: 110%Supports any skill that hits enemies.Per 1% Quality:Supported Skills deal 0.5% increased Damage with PoisonSupported Skills have (1-44) to (2-66) added Chaos DamageSupported Skills have 40% chance to Poison on HitThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.

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1

Poison SupportPoison SupportChaos, SupportIcon: oMana Multiplier: 135%Requires Level 31Supports any skill that hits enemies.Per 1% Quality:Supported Skills deal 0.5% increased Damage with PoisonSupported Skills have 60% chance to Poison on HitSupported Skills deal (0-19)% more Damage with PoisonThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.

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Vile Toxins SupportVile Toxins SupportSupportIcon: eMana Multiplier: 120%Requires Level 38Supports any skill that hits enemies.Per 1% Quality:Supported Skills deal 1% increased Damage with PoisonSupported Skills deal (30-49)% more Damage with PoisonSupported Skills deal 5% more Damage with Hits for each Poison on the Enemy, up to (6-9)This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.

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Melee Physical Damage SupportMelee Physical Damage SupportMelee, Support, AttackIcon: MMana Multiplier: 140%Requires Level 18Supports melee attack skills.Per 1% Quality:Supported Skills deal 0.5% increased Melee Physical DamageSupported Skills deal (30-49)% more Melee Physical DamageSupported Skills deal (30-49)% more Damage with Bleeding and Poison caused by Melee HitsThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.

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Related quality stats

Skill gem

Lesser Poison SupportLesser Poison SupportChaos, SupportIcon: OMana Multiplier: 110%Supports any skill that hits enemies.Per 1% Quality:Supported Skills deal 0.5% increased Damage with PoisonSupported Skills have (1-44) to (2-66) added Chaos DamageSupported Skills have 40% chance to Poison on HitThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.

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1

Poison SupportPoison SupportChaos, SupportIcon: oMana Multiplier: 135%Requires Level 31Supports any skill that hits enemies.Per 1% Quality:Supported Skills deal 0.5% increased Damage with PoisonSupported Skills have 60% chance to Poison on HitSupported Skills deal (0-19)% more Damage with PoisonThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.

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Vile Toxins SupportVile Toxins SupportSupportIcon: eMana Multiplier: 120%Requires Level 38Supports any skill that hits enemies.Per 1% Quality:Supported Skills deal 1% increased Damage with PoisonSupported Skills deal (30-49)% more Damage with PoisonSupported Skills deal 5% more Damage with Hits for each Poison on the Enemy, up to (6-9)This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.

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Unique items

Item

Stats

Coated ShrapnelCoated ShrapnelCrimson JewelTraps and Mines deal (3-5) to (10-15) additional Physical DamageTraps and Mines have a 25% chance to Poison on HitThe Ezomytes have a saying: Take everything and waste nothing.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.

Growing AgonyGrowing AgonyViridian JewelLimited to: 1Radius: Medium (1200)(8-12)% increased Damage over TimeWith at least 40 Dexterity in Radius, Viper Strike deals 2% increased Damage with Hits and Poison for each Poison on the EnemyWith at least 40 Dexterity in Radius, Viper Strike has a 10% chance per Poison on Enemy to grant Unholy Might for 4 seconds on HitMaligaro understood that devotion to science, Means devotion to trial and error. For Maligaro's errors, death was slow, And very painful.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.

The Golden RuleThe Golden RuleViridian JewelLimited to: 1(30-40)% increased Armour while BleedingBleeding you inflict is Reflected to you+1% to Chaos Resistance per Poison on youPoison you inflict is Reflected to youHurt as you would be hurt.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.

Maligaro's CrueltyMaligaro's CrueltyTurquoise AmuletRequires Level 20+(16-24) to Dexterity and Intelligence(4-8)% increased maximum Life(25-30)% chance to gain a Frenzy Charge on Killing an Enemy affected by at least 5 Poisons(12-15)% chance to gain a Power Charge on Killing an Enemy affected by fewer than 5 Poisons10% increased Damage with Poison per Frenzy Charge3% increased Poison Duration per Power Charge"He does not love. He does not feel regret or remorse.He does not think about consequences, only possibilities.If that does not describe a monster, tell me: what does?"- Archbishop Geofri

Coralito's SignatureCoralito's SignatureDiamond FlaskLasts 4.00 SecondsConsumes 20 of 40 Charges on useYour Critical Strike Chance is LuckyRequires Level 27Take 30 Chaos Damage per Second during Flask effect25% chance to Poison on Hit during Flask effectYour Critical Strikes do not deal extra Damage during Flask effect(50-75)% increased Duration of Poisons you inflict during Flask effectGrants Perfect Agony during Flask effect"What cruelty it is, that to be judged a success,such great work must go uncredited."- Coralito, Brotherhood of SilenceRight click to drink. Can only hold charges while in belt. Refills as you kill monsters.

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Take 30 Chaos Damage per Second during Flask effect25% chance to Poison on Hit during Flask effectYour Critical Strikes do not deal extra Damage during Flask effect(50-75)% increased Duration of Poisons you inflict during Flask effectGrants Perfect Agony during Flask effect

Fenumus' ToxinsFenumus' ToxinsNecromancer CircletQuality: +20%Energy Shield: (176-192)Requires Level 65, 112 IntAdds (16-21) to (31-36) Chaos Damage to Spells(220-250)% increased Energy Shield10% chance to gain a Power Charge on hitting an Enemy affected by a Spider's Web(6-10)% chance to Poison per Power Charge(15-20)% increased Damage with Poison per Power ChargeAspect of the Spider inflicts Spider's Webs and Hinder every 0.5 Seconds insteadA hunter uses everything at their disposal.The First of the Night did not hold back her venom. She used it to weaken her enemies, and used her enemies to strengthen her many children.

50% chance for Attacks to Maim on Hit against Poisoned Enemies40% chance to Poison on Hit5% increased Poison Duration for each Poison you have inflicted Recently+0.1% to Critical Strike Chance per Poison affecting Enemy, up to +2.0% [1]

Version history

Skills calculate their Ignite, Poison or Bleed values as a separate damage value, taken straight from the base and added damage of the skill. This gives skills that deal fire damage a minimum and maximum Ignite Damage per Second value that is rolled on Ignites that the skill causes. Poison, Bleed and Ignite damage values are based on the base damage of the skill, and then affected by appropriate damage modifiers. Some damage modifiers affect both the hit and the Ignite, Poison or Bleed, while some only affect one.

Bleeding and Poison are now both considered 'Ailments'. This means their durations are only affected by increased bleeding/poison duration modifiers, and the new ailment duration modifier (they are not elemental ailments, so are not affected by the existing modifier to elemental ailments).

Rather than dealing the damage of the highest hit (as Ignite does), poison can now have multiple stacks. This means that every hit counts, rather than just the occasional big hit. This also lets it scale much better towards end-game, and differentiates it from other damage-over-time effects.

Poison can now only be applied by Chaos and Physical damage. This is for both thematic reasons, and to have it act as a reward for builds that have less of a focus on auras and elemental supports for damage boosts.

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